package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Slf4j
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }
//    TODO 后面需要改成当前员工的值
    @Override
    public void addNewEmployee(EmployeeDTO employeeDto) {
//       使用builder设置属性
        Long empID = BaseContext.getCurrentId();

        Employee.EmployeeBuilder employee = Employee.builder()
                .username(employeeDto.getUsername())
                .name(employeeDto.getName())
                .password(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()))
                .phone(employeeDto.getPhone())
                .sex(employeeDto.getSex())
                .idNumber(employeeDto.getIdNumber())
                .status(StatusConstant.ENABLE);
//                .createTime(LocalDateTime.now())
//                .updateTime(LocalDateTime.now())
//                .createUser(empID)
//                .updateUser(empID);
        log.info("新增员工，员工信息____：{}", employee);
        employeeMapper.insert(employee.build());
    }

    @Override
    public PageResult selectEmpByPage(EmployeePageQueryDTO employeePageQueryDTO) {

        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());

        //2. 执行查询
        List<Employee> empList = employeeMapper.selectEmpByPage(employeePageQueryDTO);

        //3. 解析查询结果, 并封装
        Page<Employee> p = (Page<Employee>) empList;
        return new PageResult((int) p.getTotal(), p.getResult());
    }


//    根据属性动态修改员工
    @Override
    public void updateStatus(Integer status, Long id) {
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
//                .updateTime(LocalDateTime.now())
//                .updateUser(BaseContext.getCurrentId())
                .build();

        employeeMapper.update(employee);
    }

    @Override
    public void editEmployee(EmployeeDTO employeeDto) {
        Employee employee = Employee.builder()
                .id(employeeDto.getId())
                .name(employeeDto.getName())
                .username(employeeDto.getUsername())
                .phone(employeeDto.getPhone())
                .sex(employeeDto.getSex())
                .idNumber(employeeDto.getIdNumber())
//                .updateTime(LocalDateTime.now())
//                .updateUser(BaseContext.getCurrentId())
                .build();
        log.info("修改员工信息：{}", employee);
        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Long id) {
        return employeeMapper.getById(id);
    }
}


